Gear remover or pinion puller



. j y l G. T. McCLARRAN.

GEAR REMOVER OR PINION FULLER. APPL ICATION FILED JAN-15-1921.

1,41 7,265 I Patented May 23, 1922.

ononon r. MGCLARRAN, or enzinnsnnae, rnnnsrnvenm.

GEAR REMOVER 0R PINION FULLER.

Application filed. January 15, 1921.

T 0 all whom it may concern:

Be it known that I, Gnonon T. MoCLAR- RAN, a citizen of the UnitedStates of America, and a resident of Greensburg, Pennsylvania, haveinvented certain new and useful Improvements in a Gear Remover or PinionPuller, of which the follow in is a specification.

he invention relates to a gear remover or pinion puller.

The object of the present invention is to provide a simple, practicaland etlicient gear remover or pinion puller of strong, durable andcomparatively inexpensive construction designed for removing pinionsfrom the driving shafts of automobiles and for removing gears of variousother mechanisms and capable of being rapidly applied to a drive shaftand pinion and of enabling the pinion to be rapidly and easily removedfrom the shaft without injuring either of the parts or affecting thethreads of the adjustable connection of the device.

With these and other objects in view, the invention consists in theconstruction, arrangement and novel combination of parts hereinafterfully described and shown, it being understood that various changes inthe form, proportion and minor details of con struction within the scopeof the claims appended hereto may be resorted to without departing fromthe spirit or sacrificing any of the advantages of the invention.

In the drawings in which like characters of reference designatecorresponding parts in the several figuresz Figure 1 is a longitudinalsectional view of a gear remover and pinion puller constructed inaccordance with this invention;

Figure 2 is a plan view of the head of the body portion;

Figure 3 is a sectional view of the same;

Fig. 4c is a perspective view of the head of the body portion.

In the accompanying drawings, in which is illustrated the preferredembodiment of the invention, the gear remover and pinion pullercomprises in its construction a cylindrical casing or housing composedof curved sections 1 and a circular head 2, which is secured to thesections at the outer edges thereof by means of screws 3 extendingthrough openings 4 in the outer portion of the head and engagingthreaded sockets 5 in the adjacent abutting edges of the sec-Specification of Letters Patent.

Serial No. 437,534.

tions 1. The openings 4 are preferably of slightly greater diameter thanthe screws 3 asclearly indicated in Figure l of the drawings to admit ofan adjustment of the sections 1 and a proper positioning of the samecontiguous to each other and to the inner face of the circular head. Thecurved sections 1 are spaced slightly from one another and form acylindrically shaped casing, the sec tional character of the cylindricalbody permitting thesections to be readily separated and assembled arounda pinion preparatory to removing the same from a drivingor other shaft.7

The device shown in the accompanying drawlngs is especially designed forremoving the pinion from driving'shafts of automo biles, but theinvention is applicable to various other pinions and gears for removingthe same from their shafts. The cylindrical body is tapered interiorlyas shown at 6 to conform generally to the configuration of a pinion, andthe sections are provided at their engaging ends with inwardly extendingflanges 7 having beveled inner faces 8 conforming to the bevel at theinner face or end of the pinion to be operated on and the said flangeswhich flt together and provide a complete annular flange when thesections are assembled, engage the back of the pinion throughout theentire periphery of the engaged portion and exert a uniform pull. on thepinion in removing the latter.

' The head 2 is provided with a central opening 9 and it has an annularboss or enlargement 10 at the exterior around the said opening 9, whichis threaded to receive a screw 11. The screw 11, which of cylindricalforn1,.;,is 1 rovided with an outer polygonal portion and an inner,reduced terminal. cylindrical portion. The outer polygonal portion 12 isadapted to receive a wrench or other tool for adjusting the screw toarrange the inner cylindrical portion 18 tightly against the end of theshaft on which the pinion is mounted and by tightening the screw theflanges are drawn tightly against the back of the pinion and the deviceis placed under tension. When the device is in this position, the outerend of the screw 11 is struck a blow with a hammer or other tool whichforces the shaft inward or causes a relative movement of the device sothat the flanges '7 are forced slightly away from the engaged rear faceof the pinion and the rebound will produce a pull on the pinion andeffect the removal of thesame from the end of the shaft, It has beenfound by expe rience that a single blow is usually sufficient to effectthe removal of the pinion from the drive shafts of an automobile.

The sections of the cylindrical body are confined and held againstoutward movement radially of the device by means of a ring 14 removablyfitted around the exterior of the sections and provided at the saidsections with radially arranged screws 15 mounted in will not affect thethreads of the screw 11 or 111 anymanner 1n ure the same, and thatwhenthe outer end ofthe screw 11 1s struck by hammer, the casing orhousing moves over the plnion and 1n rebounding efiects a pull on thesame thereby-causing a ready removal of the pinion from the drive shaft.

lVhat is claimed is 1. A pinion puller or gear remover including asubstantially cylindrical body composed of sections and provided at oneend with pinion engaging flanges and having threaded sockets in theirother ends, a head,

fitted against the latter ends of the sections and having openingsregistering with the said sockets, screws passmg through the openingsand engaging the threaded sockets,

and a central shaft engaging screw mounted in the head.

2. A pinion puller or gear remover in cluding a casing dividedlongitudinally into separable sections provided at one end with inwardlyextending pinion engaging flanges and adapted to be fitted aroundthepinion, a

member detachably arranged on andencircling the sections, a head fittedagainst/the other ends of the sections and secured to the same, and ascrew mounted in the head and adapted to engage the end of the shaft onwhich the pinion is mounted.

In testimony whereof I have hereunto setmy hand.

en ones 1T; McOLARRAN'.

